Improve contrast on file size indication during import

The contrast ratio between text and its background is not at least 4.5:1.

Element name: 53.88 KB

Location: Below the "Location" edit field, in the "Import" modal.

Steps to reproduce:
1. Click on the "import tab".
2. Click on the "Drag and drop, or click to select files to upload." link and upload the file.
3. Then the above text will appear.

Hexadecimal values:
Text color code: #D1D1D1
Background: #FFFFFF
The contrast ratio is: 1.5:1
Recommendation to fix
RULE :
Small text (under 18 point regular font or 14 point bold font) MUST have a contrast ratio of at least 4.5 to 1 with the background.

HOW TO FIX:
Fix this issue by adjusting the text and/or background to increase the contrast to at least 4.5 to 1.

REFERENCE:
Deque University: https://dequeuniversity.com/class/visual-design2/contrast/text-against-background

BACKGROUND:
People who have low vision or are colorblind may have difficulty reading text if the contrast between the text its background is insufficient. When the contrast ratio between text and its background is adequate, people who have low vision or are colorblind are more likely to be able to read the text.