user defined colour marker for compound and complex rhytm

i would love to see user defned colour markers across the pattern .

For example …our song uses lpb 8 and a beat of measure 11/8 … compound rhytm = 5/8+3/8+3/8 .

SO our pattern is 88 lines long

Having a coloured market @ any line we want would make things so much easier .

Could be a small 1 pixel width line or just a coloured dot …

please please