/diy/ - Do It Yourself

Hello guys,
I am thinking about building a """big""" 7-segment-display myself.
I thought about driving it with rgb leds because muh colors. Now I ordered smd rgb leds, but i didn't think about them being common anode. That means that i am unable to put them inseries, obviously.
Now i thought about putting them all in paralel. BUT, if i do it like pic related, i'd have (if i use 10 leds for each segments) to put fucking 30 resistors on each segment.
Can't I just put one resistor at the vcc? Wouldn't this just increase the drawn power on that one resistor or am I a brainlet?

Any other idea to design it? each segment should have around 10-12 leds.