Colored walls now!
Colored walls don’t affect particles of the same color… Same applies to blocks!
Still not sure what’s the best option for changing the attraction type… Currently, it’s keypress driven (as you can see in the lower right corner), but I still think that having areas on the screen that change the color of the particles or the cursor (really the same, it’s just a matter of duration of the effect) might open new options for the gameplay… Probably will have to code it to try it out, which will mean less one hour or so of polish-time (especially because I’ll have to be social tonight, so no late night coding for me!) 
Anyway, this is going fine… If I’m lucky, I can finish all the gameplay elements today, which means I have all the day tomorrow for the polish (levels, menus, sound, music, etc)…
