1. Goto Plugins> editor
2. Choose Select plugin to edit: WP Currency converter > Select. The file you are editing is “wp-currency-converter/wp-currency-converter.php”
3. Scroll down to this line
echo ‘<p>’ . __(‘Amount’, ‘wpcc’) . ‘ (‘ . $currency_to . ‘): ‘ . $currency[$currency_to] . ” ” . $output . ‘</p>’;
4. Change it to
echo ‘<p class=”wpcc_output”>’ . __(‘Amount’, ‘wpcc’) . ‘ (‘ . $currency_to . ‘): ‘ . $currency[$currency_to] . ” ” . $output . ‘</p>’;
5. Now click “wp-currency-converter/css/wp-currency-converter.css” from right pane.
6. Add this to the bottom of this file
.wpcc_output {
font-size: 20px;
color: #6DC234;
font-weight:bold;
}
You can use your color, font size etc CSS.
7. Done
Hope this helps. Please let me know if there are any questions.