I most cases it should just work. (Every CRT based system.) The Dual Screen presets, and a couple with very small screens, will require loading and saving.
Of course if you don’t like the new method you can change the Ambient lighting parameter to only use the 2nd image.
Just manually add…
HSM_AMBIENT_LIGHTING_SWAP_IMAGE_MODE = “2.000000”
to your existing core, game, or content directory presets.
Do you have this one already?
Here is a new WIP.
The Pocket Dream Console.
Boy was this thing fun! 
There are a lot of funky curves and bevels going on, rivaling that of the WonderSwan Color and the NGP pair.
It will never be perfect, but there is enough to trick the brain into believing. 
I will probably go back and brighten up the triggers and external switches, so they show against the background a bit better. Otherwise I think it is done.
I am using every available shader layer, so it can be colored. That being said, I think only the Device layer can be colored without unexpected results. (So no later model PDC color variations. 
)
I also need to do some R&D on the PDC screen aspect. Depending on the results I may have to tweak the glass/bezel a bit.
From a video I just found, it also appears that the LED is blue. 
OK. Research done, changes made.
I may make a few small tweaks but it is pretty close to done. Time to start exporting layers and building presets.
I’m feeling a bit nostalgic… this graphic only took about 12 hours to complete. A short time ago it would have taken several days worth of trial and error.
BTW. This system is a blast to play and the controls for the two available PCD200 games work OTB.
The MAME pdc100.zip needs to be loaded as content for the 100 game multigame unit and requires the mouse.
There are also four other multigame roms…
All told there are a lot of games.
It appears that some of the games are vertical so if I can verify this I may need to make a vertical graphic.
That can wait for a later time though. I don’t want it slowing me down right now.
Edit: I have verified that some games are vertical but my statement about waiting still stands.
This system looks pretty cool, I’m going to have to try it out!
The Pocket Dream Console is in the repo!
7 graphics left!
What are ya gonna do with all your free time once you’ve completed them all?
There are still a few “optional” graphics that need to get done.
In the short term I will be spending my time converting the last half of my graphics to Batocera decorations.
Long term I plan on doing an extended series of vintage TVs.
Then there will be new cores that get added, new MAME software lists, and changes in the shader that will need implementing.
I will have enough to keep me busy.
I think these looks fantastic and really blew me away when I installed them last night. I like the TV presets since the screen part blends in well with the background stuff though I do wish there was at least one option that was a darker grey/light black in the night options. TV7 is a good example where I wish I could have that but in a more common TV colour. If you ever get bored when all your other work is done, maybe you could throw a darker version in of TV7 like how most of Soqueroeu’s TVs on a table are coloured.
Really is incredible the stuff you all have done with this stuff, from HSM’s mega bezel reflections which have me shake my head at how real they look to your presets here and then Soqueroeu’s presets. Also can’t forget that Guest fellow and the others. I thank you all.
Welcome to the forum!
I’m glad your enjoying the Mega Bezel. I agree… it is something very special.
I’m also happy you are enjoying my work.
As I said above, I plan on doing an extensive series of Vintage TVs. I don’t really have anything like the TV1 through TV4 and TV7 planned but I am not against doing more.
For the time being you can familiarize yourself with the Mega Bezel parameters.
Specifically, the image layer HSV (Hue, Saturation, and Value) and Gamma parameters.
Here is a shot of the default TV7 preset.
And here is a shot with background image layer Gamma reduced and the Bezel color value reduced to compliment it.
I find that a good mix of Brightness and Gamma reduction, combined, helps retain some of the contrast.
As dark as this is I don’t really think Night mode would yield much of a benefit.
Have fun and thanks for the feedback!
Here is a new WIP.
The Camputers Lynx!
There is really not a whole lot going on with this system’s looks. It may be the most boring system I have done yet.
The most standout feature is the logo plate, so I did my own logo from scratch. It isn’t perfect but I think it is more true to the original that anything floating around the Interwebs.
The second standout feature is the arrow keys being on opposite sides of the keyboard. 
They are all visible so that is that.
To run the entire floppy and cassette library you need to use all three models… the Lynx48, Lynx96, and Lynx128.
This being the case, I will release three sets of presets with the only difference being the logo plate.
I will probably just use the Decal layer to swap them out and save space.
I wasn’t sure how I would feel about the new Device split scale feature but I have to say…
…it is a whole lot of fun!
@HyperspaceMadness I don’t know where you get your magic powers, but they are beyond compare!
Incredible work my friend.
Aw shucks 
Ah, the magic is bashing my head on the keyboard (aka persistence) until I find something that works 
(which was the case with getting the exposed bit to fill in)
I think we have a lot to thank @TheNamec for this, he had a strong vision of how he imagined this would work that he shared with me and was very encouraging, thanks @TheNamec 
You know the saying, “The whole is greater than the sum of the parts.” (I believe it was Aristotle who coined the phrase?)
Anyway… a great team is indispensable! Thanks @TheNamec!
I did an OCD pass on the Camputers Lynx.
I moved the keys outwards to expose them just a little more, toned down the bevels on the key faces, darkened the sides of the keys a bit, centered the logo plate, and exported the separate Decal Layers.
I think I am ready to start building presets.
BTW. I have been experimenting with lua autoboot scripts. (Really just hacking some I found on GitHub until they work correctly.)
Combined with a *.cmd used as content it is a really powerful way to run some of these more complicated MAME systems.
At some point, when i have enough lua scripts and cmd files to make it worthwhile, I will add them to a repo. (Along with relevant opt files.)
Ahah c’mon comrades, so called FLUIDvision was perhaps the first feature I begged @HyperspaceMadness for… the first of a loooong series of stealed week-ends!
And it coame out much better and easier to use than the ancient 9-slice prototype we did almost… 
2 years ago!
Mega Bezel community is such a great place to improve ideas, can’t even imagine what strange feature we will be working on in six months!
May the Pixels be with us! 
The Duimon_Mega_Bezel repo and release are updated to v0.9.0.4
Changes:
The link to the current release is in the first post. Installation/Update instructions are near the end of the second.
