Tibbles break the output background color of iESS

[cddesja]

Not totally sure what to title this bug, but when a tibbleis printed, the iESS output is printed in a different color, light gray. his persists regardless of whether I am using a tibble or not. This makes it difficult to see. See the screenshot below. Note, this happens regardless of my theme.

This is reproducible 100% of the time for me. Below is a minimal script that reproduces this

## output prints normally
head(mtcars)

## output prints in light gray
head(tibble::as_tibble(mtcars))

## output continues to have tibble coloring
head(mtcars)

I think only the #A tibble: 6 x 11 line and the line indicating variable type should be in light gray. See this screenshot from RStudio.

[maxecharel]

duplicate of #1211, itself a duplicate of #1193 (for which workarounds are provided)