Visualisation of DNA methylation

[shadow19c]

Hello,
I have a GFF file with the ratio of methylation of different context of cytosine (CG, CHH, and CHG).
I want to plot all the information on one track, so I thought I can use the gff using the last colomn and put coloration for each line depending on the context.

But I tried a lot of viewers and doe not work.

If you have any standalone viwer to do it ?

Thanks