shit, no, sorry. purple's always best. then either orange if built on or red if not
Assume you mean light blues rather than purples.
I'm getting an EV of around $80 or $85 (depending on opponents strategy of whether or not to stay in jail for all 3 gos) for a full set of fully developed oranges and $37 or $39 for a fully developed set of light blues.
By my crude calcs, light blues $1070 to buy and get tooled up, oranges less than double that at $2060
My stats are taken from this page...
http://www.tkcs-collins.com/truman/monopoly/monopoly.shtmland like yours show the breakeven point of the light blues to be the lowest number of opponent rolls.
Given the numbers stated above, the developed oranges yielding more than twice as much as the developed light blues, but costing less than twice as much, how is this possible?