Red LED need different Voltage to LIT than BLUE. So, when red and blue are attached in parallel the one with Red will draw the entire current since have lowest voltage and will LIT and may burn. So rather than brainstorming with resistors what i found out is to use in series with other LEDs.
Now, in the schema we see a swap of both LED Blue on top in left and Red on top on right since using one type of LED at one end will concentrate the entire color to one side thus both colors might get visible and harder to mix. So, a swap will do a great job.
Since, now each parallel strip will need 9v to LIT bright.
In TOP View
The center rod is the aluminium rod which i pulled out from hanger. The two strips on which LEDs are attached are acrylic strips which will give them separation.