The colors are still set to Pandemonium's outfit (my current avatar for reference) while the image I uploaded was Alicehearts' outfit. Those are definitely not the colors she used.

And yes, I checked, she isn't using a precolored outfit that would override the color selections - that's the recolorable one. *points to the code below*

https://www.sylestia.com/image_builder_avatar_test.php?S1=2&S2=38&S3=12&S4=4&S5=1&S6=2&S7=89&S8=0&S9=0&S10=1,2,3&S11=0&I1=jovial_cafe_portable_desk_boss_blue&I2=bakers_outfit&I3=0_hairbeads&I4=falling_hearts&I5=0&I6=firefly_bog&C1=FACDCD&C2=8CF0FF&C3=FAEE6E&C4=FFFFFF&C5=FFFFFF&C6=FFFFFF&C7=C6E6F7&C8=C6E6F7&C9=FAB4B4&C10=FF7FB9&C11=4FAADB&C12=FFFFFF&C13=FFFFFF&C14=000000&C15=FFFFFF&C16=000000&C17=43D2E8&C18=8CF0FF&C19=000000&C20=4FAADB&C21=94D5F7&C22=49B7F2&C23=000000&C24=8F8F8F&C25=FFCF54&C26=8F8F8F&size=250&LIB=1

correct ^^
becaus this is what i'm using colored myself

Thank you.

It's a known issue. I updated the 'Known Issues' on the announcement thread to include this and some other frequently reported bugs.