"Use a neutral gray that is closer to the background theme color instead of a static grey"

I still think that this is not a good change for the advanced color selector. It really should be plain mid-gray. For the rest I'm fine with the changes.

@rempt is there a specific reason that you prefer the mid gray?

This was my logic for the decision. Making the background a fixed color doesn't fit in with the rest of the color theming we do in every other part of the application. It puts a lot of attention on that area of the UI since it is doing something not consistent with the rest of the UI. Maybe we can get some other artists to chime in with what they think.

Examples of other programs that don't use a mid grey
Affinity (dark) - https://affinity.help/designer/en-US.lproj/images/panel_clr_wheel.png
Coolorus (Photoshop - dark) - https://78.media.tumblr.com/d11b3bcc92fe8c40f246072b11708094/tumblr_inline_nppvdolasX1t1qqx1_500.png
Coolorus (Photoshop - light) - https://coolorus.com/images/coolorus_gamut_lock_screen_flat.png
Medibang - https://medibangpaint.com/en/wp-content/themes/cloudalpaca.com/images/pc/product-main-device.png

In all the examples I found across various programs the background color relates to the theme color. The only one I found that uses a mid grey is Painter...but the entire theme and UI is also a mid grey with that.

I don't have a really strong opinion. I was coming at it from a perspective that it doesn't stand out so much on the UI.

After talking with a few artists we are going to keep it at 50% grey -- regardless of what other applications are doing. The leading reason to keep it at 50% grey is that it minimizes the chance your eyes will be fooled with local colors. My examples are about UI consistency which is nice...but I think functional reasons should override aesthetic reasons.

I will revert that commit.

Does anyone else need to look at these changes?