http://www.defence-force.org/computing/oric/coding/part_7/in...
Here's more details on the attributes mode that, when properly grok'ed, gives us color options never before seen on the Oric:
http://thespider.oric.org/oric_hires_colour.html
Twilighte (RIP) exploited this extensively for his games - check out http://oric.org/ for his titles (they're in the top-10) ..
See also this thread:
Best thing in for summer was two weeks with my grand father, my Atmos and my monitor - and certainly not my mom telling me to get out in the sun (and my grand father couldn't care less.)
http://forum.defence-force.org/viewtopic.php?f=21&t=1880
Check out some of the demo's at the end of the thread .. it was recently booted up and demonstrated adding new color resolutions to the system. Truly mind-boggling!