When I paste latex expression `$1+\textcolor{{green}}{\frac{4}{6}}$`

with the menu option “paste from latex”, the color is recognized as a math expression and is turned in “g*r*e*e*n”

```
<math | 1+ <with | color | g*r*e*e*n | <frac | 4 | 6 >>>
```

How can I prevent this ?