1 files changed, 15 insertions, 13 deletions
diff --git a/activity/activity-simplepiano.svg b/activity/activity-simplepiano.svg
index 6e740d1..3f869e8 100644
--- a/activity/activity-simplepiano.svg
+++ b/activity/activity-simplepiano.svg
@@ -1,6 +1,8 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
+<?xml version="1.0" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"
+[
+  <!ENTITY fill_color "#FFFFFF">
+  <!ENTITY stroke_color "#000000">
+]>
 <svg
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:cc="http://creativecommons.org/ns#"
@@ -26,28 +28,28 @@
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    y="5.4357018"
    id="rect3081"
-   style="fill:#000000;fill-opacity:0;stroke:#000000;stroke-width:3.10540009;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /><rect
-   width="8.0816011"
-   height="30.315643"
-   x="17.218063"
-   y="4.638278"
-   id="rect3081-8"
-   style="fill:#000000;fill-opacity:1;stroke:#000000;stroke-width:1.32974613;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /><rect
+   style="fill:&fill_color;;fill-opacity:1;stroke:&stroke_color;;stroke-width:3.10540009;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /><rect
    width="13.699533"
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    y="5.4357018"
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-   style="fill:#000000;fill-opacity:0;stroke:#000000;stroke-width:3.10540009;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /><rect
+   style="fill:&fill_color;;fill-opacity:1;stroke:&stroke_color;;stroke-width:3.10540009;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /><rect
    width="13.699533"
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-   style="fill:#000000;fill-opacity:0;stroke:#000000;stroke-width:3.10540009;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /><rect
+   style="fill:&fill_color;;fill-opacity:1;stroke:&stroke_color;;stroke-width:3.10540009;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /><rect
    width="8.0816011"
    height="30.315643"
    x="31.065582"
    y="4.5407605"
    id="rect3081-8-7"
-   style="fill:#000000;fill-opacity:1;stroke:#000000;stroke-width:1.32974613;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /></svg>
-\ No newline at end of file
+   style="fill:&stroke_color;;fill-opacity:1;stroke:&stroke_color;;stroke-width:1.32974613;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /><rect
+   width="8.0816011"
+   height="30.315643"
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+   style="fill:&stroke_color;;fill-opacity:1;stroke:&stroke_color;;stroke-width:1.32974613;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" /></svg>