Upgrade to 1.0 and switch clients to dom-repeat where needed.

third_party/polymer/v0_8/components/paper-progress/README.md

+paper-progress
+===================
+
+The progress bars are for situations where the percentage completed can be
+determined. They give users a quick sense of how much longer an operation
+will take.
+
+Example:
+
+```html
+<paper-progress value="10"></paper-progress>
+```
+
+There is also a secondary progress which is useful for displaying intermediate
+progress, such as the buffer level during a streaming playback progress bar.
+
+Example:
+
+```html
+<paper-progress value="10" secondaryProgress="30"></paper-progress>
+```
+
+Styling progress bar:
+
+To change the active progress bar color:
+
+```css
+paper-progress {
+  --paper-progress-active-color: #e91e63;
+}
+```
+
+To change the secondary progress bar color:
+
+```css
+paper-progress {
+  --paper-progress-secondary-color: #f8bbd0;
+}
+```
+
+To change the progress bar background color:
+
+```css
+paper-progress {
+  --paper-progress-container-color: #64ffda;
+}
+```