In this study, we explore a new method for quantifying stretch/strain of fabrics by remotely measuring the color properties of the fabric under static, stepwise strain conditions as it stretches/relaxes. This method is based on a colloquially well-understood phenomena—that as an elastic fabric (e.g., a knit) stretches, the reflected color content changes, revealing more of the underlying surface. Here, we demonstrate that for a variety of elastic knit fabrics of varying color (white, black, red), when stretched in front of varying color backgrounds (white, black, and red), the reflected color content (measured via both RGB Euclidean distance and ΔE, captured with an off-the-shelf camera) correlates to the percentage stretch of the fabric. This sensitivity varies depending on the specific fabric-background color pairing and generally decreases beyond approximately 30% strain as the ΔE response begins to plateau. This method offers a new strategy for remotely, and non-invasively, measuring strain in elastic fabrics without the need for additional embedded sensors/hardware.