Chart Prompts

Restyle my chart in the "Patina Age" style described below. Keep my data, chart type, title meaning and units; change only the presentation. Use the charting library this project already uses (plain SVG if there is none). If the library can't express a detail, draw it in a custom layer instead of dropping it. Measurements assume a 960 x 600 chart; scale them proportionally.

Mood: a conservator's field report on weathered metal. Dark, calm and a little museum-like: each series is drawn in the color its metal ages into, and small polished sample discs show how the surface looked at key moments.

Colors (use these exact values):
- Background: #122420 (dark verdigris), with a radial lift to #1A332D slightly right of center.
- Series (aged colors): #6CC4A4 (copper green), #B8B8C8 (tarnished silver), #C08A52 (bronze brown). A fourth series: #D98C8C (rose oxide).
- Title and label text: #E8E2D0 (cream). Secondary text: #8FA39B. Gridlines and rules: #223A34.
- Sample disc fills run from fresh to aged, e.g. copper #C47A4E, #8E6A45, #5E8E72, #6FBFA0; silver #E6E6EC, #A9A6B2, #5F5B68, #2A2830; bronze #C9A060, #A87B45, #7C5634, #5A3C24.

Typography (Google Fonts):
- Cormorant italic 600 for the title (38px cream, stating the finding) and the series names at the line ends (22px, in each series color).
- Tenor Sans for everything else: eyebrow 11px uppercase with 2.6px letter-spacing in #8FA39B; subtitle 14px; axis labels, notes and value lines 12px; source 11px.

Layout:
- 56px margins. Eyebrow at y 58, title at y 104, subtitle at y 134, and a disc key at y 168 ("Sample discs show surface colour at years" followed by four 7px discs with their years).
- Plot from x 96 to 780, y 206 to 484, leaving about 120px on the right for end labels (series name, then "61% lost, goes green" in 12px cream). Nudge end labels apart so no two overlap. Footer rule at y 542 with the source at the left and a method note at the right.

Axes and grid:
- 1px #223A34 horizontal gridlines with percent labels right-aligned 12px left of the plot. Dashed (2 on, 4 off) vertical guides at the sample years. X labels as "New", "Year 5" and so on, 26px below the plot. No axis lines.

Marks:
- Line chart: smooth monotone 2.6px lines with round caps in the aged colors. At each sample year a 9px disc filled with that series' surface color at that age, a 2px ring in the series color, and a radial shine overlay (white 45% at the upper left fading to black 25% at the rim) so each disc reads as a polished coupon.
- Bar chart: grouped bars in the aged colors with 2px top radius; at the top of each bar sit the same 9px sample disc showing the surface color for that period, and the value in 12px Tenor Sans cream above.

Labels and annotation:
- One short annotation for the key crossover (e.g. "Copper overtakes silver near year 10") in 12px cream with a 0.8px #8FA39B leader, placed in clear space above the lines.

Avoid: bright saturated colors, glows, heavy gridlines, a boxed legend (label line ends directly) and any disc that hides the line direction.

When you're done, render the chart and check that dark aged discs still show their ring against the background, end labels do not collide, the crossover year is computed from the data, and the title's claims hold for both early and late years.