How to remove borders between plots?

[SeriyBg]

When I'm using the theme_solarized(light=F) from the ggthemes package, the plot's background color becomes dark. And with the patchwork, I have the white borders between them. Is it possible to get rid of it?

Example:

p1 <- ggplot() + theme_solarized(light=F)
p2 <- ggplot() + theme_solarized(light=F)
p1 | p2

[thomasp85]

I don't know where theme_solarized() comes from so it is hard to say, but perhaps setting the background color to the same as the fill?