You may be missing a brilliant or bright yellow, if anything...

the colour of this helmet:

Perhaps a slightly lighter, more intense, "artificial banana" yellow, I think, than the Flame Yellow you've got in there already??

Maybe not...

In both Super Gloss and Candy Satin Flame, I'd say I can, personally, distinguish between the inner and outer colours... but not so much the two outer colours... although I can still distinguish them.