Instructions text is barely legible on some themes.

[00-kat]

Checklist

• I have checked that this issue isn't addressed in the FAQ.
• I have checked that this issue isn't addressed in any other issue or pull request.

Describe the Issue

This issue is similar to #186, #206 and #224, but it is different text, and more related to different themes, so I am making a new issue.

On some themes, the text that says "Select or drag and drop a PNG, JPG, JPEG or WEBP image." is barely legible. Some themes have more legible text than others, but it is an issue in all the themes listed below:

• Light
• Corporate
• Synthwave
• Halloween
• Garden
• Forest (With this theme, the text is not legible at all)
• Aqua
• Lofi
• Fantasy
• Luxury
• Dracula
• Autumn
• Acid
• Lemonade
• Night
• Coffee
• Winter

Screenshots

Forest is the worst. Not only is the text illegible, the bounding box's border is also barely perceptible

Some others (all the themes listed are basically the same as these examples):

[NayamAmarshe]

Thanks for reporting. I just fixed it in v2.8

[aaronliu0130]

This is a duplicate of #445 , which admittingly doesn't have a clear title.