The lower left corner of the page "Change Theme" gives you three options: Default Theme, Hip Forums Mobile and New Forum. The Default Theme makes the site all white. Trippy. I like the magnificent purple better.
I do like the purple but some of the background colours of writing don't show up as easily in the purple version
i hadn't noticed that button, but it is a pretty standard option in forums that aren't just left the default white anyway. if invision is anything like the other software i've worked with, most add-ons need to be done on each theme kind of separately. so depending on how much attention skip is giving to the default, it's possible that there may be features missing from it.
all the themes have problems with font colors and backgrounds blending in i decided to stay with purple knob color