[R] colored 3d scatter plot

[SNN]

Hi All,

I have data for two groups, group with 100 points and group B with 15
points. i needed plot these two groups in one scatter plot, each group with
a different color. I tried

plot3d(data, col = c("red", "blue")[c(rep(1, 100), rep(2, 15))], pch=20) .
this works but the graph does not look good. 

the other option that I tried is 

scatterplot3d(data, type="p", highlight.3d=T, pch=16) where the graph looks
much nicer but i do not know how to have each group with a different color. 

Does anyone know how to do it? 
Thanks


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