An inline SVG using currentColor can take its paint color from the element's CSS color. A theme change may therefore recolor it or make it blend into the new background. Inspect the actual fill and computed color before regenerating the logo. A separately loaded image is a different embedding route and should not be assumed to inherit the page's colors in the same way.
Identify the paint source
Check whether the affected path has an explicit fill, a currentColor value or a CSS rule overriding it. Record the surrounding component's color and background in each theme. A logo disappearing on a dark page may be a contrast problem even when the file is loading correctly.
Distinguish a one-color interface symbol from a brand mark whose approved colors must remain fixed. Theme inheritance may be useful for the former and inappropriate for the latter. Preserve the original SVG and the allowed-color note rather than blindly changing all paths to one value.
Test the actual embedding route
MDN's color reference explains currentColor, and its SVG fill reference describes fill behavior. These describe web rendering, not a feature of an image-generation tool.
Ask the implementation owner to inspect the actual inline SVG or externally loaded image. A rule applied to the page's text does not automatically recolor pixels inside a PNG or every external SVG. Compare a controlled explicit-fill copy with an intentional theme-responsive copy, keeping geometry unchanged. Note which source or component rule establishes the observed color.
A proposed two-theme review
For a hypothetical one-color mark, show the same approved shape on the intended light and dark backgrounds. Record fill source, computed color and whether the silhouette remains recognizable. If a fixed brand color is required, test a suitable approved background or variant rather than silently changing the brand color.
This is a proposed review, not a browser test already performed. Include ordinary, hover and disabled states when the mark belongs to an interactive component. A default-state screenshot alone can miss a later state that changes color. Also check that a theme adjustment does not remove meaningful distinctions between different parts of the symbol.
Deliver an intentional color contract
Accept when the mark uses approved colors and remains recognizable in every required theme and state. Reject a disappearance, an unapproved recoloring or an explanation that attributes every dark-mode difference to the SVG file while ignoring its component rules. Recheck the delivered implementation after source revision.
Save the editable file, approved variants and an embedding note saying whether theme inheritance is intended. Imagild's Skills can help develop visual concepts; explicit SVG paint, CSS inheritance and theme integration belong to external design and website work. The useful output is a mark whose color behavior is deliberate, instead of a file that happens to look correct on the creator's current page.