Chisoku: great stuff man!!
But I'd like to point something out in your color guide...
Those pinkish-fuschia-purple colors at the bottom? They make GREAT colors for the various makeup patterns for the ladies.
However, the Makeup 2 pattern really doesn't lend itself well to bright reds, as it makes the eyes look bloodshot. It's actually better for DARK colors, almost an Egyptian kohl pattern.
Makeup 3 is a very muted pattern, so you can get away with using bright primary colors on it and they don't look like Tammy Faye Bakker.
Makeup 4 is actually my preferred pattern, but I tend to stick to pastels with it, again to soften the look.
And while we're at it...
SKIN TONES.
This is a custom palette that is only available for skin.
Values to the left are of course darker, and as you progress to the right they get lighter, until you're at 'cave-fish' pale.
The first three rows are your 'flesh' tones.
The first row has a lot of red to it, and can make your hero look a bit sunburnt or flushed. As you get to the left side, you get into those REALLY dark-skinned Nubian skin tones, or the "Native American" dark red and tanned tones.
The second row is more brown, and makes for good tanned or dark skinned heroes. The leftmost one is the one I commonly use for my African-American heroes, or the one immediately to the right of it.
The third row is a bit yellowish, and can be used to simulate skin tones from the Asian continent (from the dark skin tones of Thailand to the pale aristocracy of Japan).
Row four - black and white, and several shades of grey in between. Right side - undead and extremely pale heroes, perhaps those with ice powers. Left side - heroes that are made of charcoal or absorb light. Example: My friend's "Mistress Kali - Primal Form" costume is all black skin tone, with a bright orange-red flame aura superimposed on it. And it works well.
The rest of the rows are 'colored' skin tones, but they're arranged in columns, and get paler as you go down. If you're modeling a succubus and want a red skintone, use one of the red ones. Or, a lizard-woman could use the green skintones. Lots of possibilities here.
One other thing: The rightmost column in the standard color palette is a 'sheer' color. It tends to mix with the base skin color, especially when used with any 'tops/bottoms with skin' patterns. As such, one can do interesting things with these colors, simulating hosiery or sheer gloves, or translucent faceshields for helmets, etc etc.
As an exercise, I'll break down the colors I used to make
Soul Train's costume, which gets a lot of complements.
Primary color: White, or black (SG colorset).
Secondary: Gold
Skin Tone: Coffee - second or third from the left, middle row
Hair Color: Black and Coffee
Accent Color: Primary Red
Makeup color: Warm Fuscia or Burgundy, pattern 4
The combination of a white uniform with gold and red accents, against a dark skintone, really makes a striking costume. Since the red is the most striking color, I reserve it for small accents (jewel in the jeweled belt, ankh symbol in the tiara, or the lower half of the ankh chest symbol). Gold is used almost everywhere: The panels of the epaulets, the brooches of the cape, at the hem of the skirt, the belt and tiara base colors, the chest emblem base color (it's RP'd and illustrated as a necklace), and the tribal marks on the outside of the cape, the boots, and Soul's forearms (tattoos).
The rest of the uniform is white (changed to black when in SG mode).
For a very striking 'background' I'll color the inside lining of Soul's cape either black, or a slightly darker red than the accent color. This sets up a wonderful contrast between the white costume and the dark chocolate skintone, and helps make her stand out.