@OrieleSteiner On your particular site, the default text color in the banner zone (present in the "Header" page header type) is white. You've (incorrectly) placed your images within the banner zone and that's why your caption text is white. (The most common use for the banner in a header type page is a full-width background image with a title/paragraph text overlay hence the need for white text when the background image is usually dark enough or can be made dark enough for the text to be easily readable.)
What you should see in the Site Editor is two page content zones in the "Header" page header type, one for the banner content and one for the page body content. The latter zone is where your page content (your images in this case) is supposed to be.
What I'd suggest is that, rather than using the simple Weebly image element for each of your images, you instead use the image gallery element. This element is more suitable to the task of displaying your work for several reasons:
- You can easily load the image gallery element with multiple images in one shot.
- You can add captions to images after you've finished uploading them to the gallery.
- By default, your images will be amenable to a lightbox pop up display when an image is clicked on the front end and visitors can easily navigate backward/forward through the gallery using the lightbox back/forward navigation arrows.
- You can choose how many image columns to display which will allow you to have control over the image size (more columns = smaller images in the image gallery grid).
- You can choose the image aspect ratio: rectangular, square, as-is. I usually present my galleries using rectangular which gives the gallery a uniform grid appearance. This will of course crop the images that aren't the same aspect ratio but that's where the lightbox pop up comes in (shows the full image).
After you've moved your images to the page body zone, you can change the page header type from "Header" to "No Header" and this will remove the banner zone. In the Site Editor, click "Pages" in the navigation menu, click the desired page in the left-hand sidebar pages stack, change the "Header Type" from the default "Header" to "No Header".
https://www.weebly.com/app/help/us/en/topics/galleries-and-slideshows (scroll down to the "Gallery" section)
https://www.weebly.com/app/help/us/en/topics/create-pages-and-navigation
