Instruction: Describe how 'currentColor' works and provide examples of its practical applications.
Context: This question probes the candidate's understanding of the 'currentColor' keyword, a versatile tool in CSS for styling elements based on the current color context.
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For example, let's consider a scenario where we have a button with a dynamic foreground color, which depends on the theme of the page. If we want to ensure that the button's border is always the same color as its text, we can utilize currentColor to achieve this. By setting the border-color property to currentColor, the border automatically inherits the color defined by the button's color property, thus maintaining a consistent appearance regardless of the theme.
.button { color: #007bff; /* Example primary button color */ border:...